Astro Conditions

Astro Conditions — Know when, where, and what to observe.

Plan better nights under the stars.

Astro Conditions combines stargazing weather, darkness, Moon conditions, nearby observing locations, personalized equipment guidance, and recommended celestial targets in one private, ad-free app.

See whether tonight is worth going out, find a better place to observe, and discover what will be visible from your location—from planets and double stars to clusters, nebulae, and galaxies.

• Night Quality score from 0 to 100 • Best Targets personalized for your location, night, and equipment • Nearby areas with better forecast conditions • No account, subscription, or advertising

BEST TARGETS

Explore recommended objects from a curated catalog for your selected location and night.

Add binoculars, visual telescopes, or Smart/EAA telescopes, then choose what you plan to use. Astro Conditions evaluates each target against your selected equipment and explains the best match. You can also choose Naked Eye.

• See a suitability score for each target • Tailor recommendations to your selected equipment • Understand whether each target is preferred, practical, challenging, or unsuitable • Find the best observing time, direction, and altitude • Understand how weather, darkness, Moonlight, and visibility affect the view • Get target-specific Finding Tips, Best Equipment guidance, and Observing Notes • See realistic visual expectations separated from Smart/EAA and photographic results • Browse reference images for supported targets • Choose from Easy, Standard, and Challenge observations

MY EQUIPMENT

• Save the equipment you use • Select one or more instruments for each session • Use Naked Eye for unaided observing • See the best match among your selections

STARGAZING WEATHER

See the hourly conditions that matter most when observing.

• Cloud cover, visibility, humidity, wind, and temperature • Seeing estimates based on temperature stability and upper-atmosphere wind • Transparency estimates using cloud layers and visibility • Fog risk based on humidity, dew point, visibility, clouds, and wind • Night Quality scoring that accounts for heavy cloud cover • Compare early- and late-night trends • Three-day forecast

FIELD MODE

Use the app at the telescope without flooding your eyes with bright light.

• Switch to a dim red appearance designed to help preserve night vision

SUN, MOON & DARKNESS

• Sunrise and sunset • Astronomical night start, end, and duration • Moonrise and moonset • Moon phase, illumination, and altitude • Moonlight-aware target recommendations

BEST SPOT SEARCH

• Discover nearby locations with better forecast conditions • Compare ranked observing areas on a map • Adjust search radius and location spacing • Open a selected spot in Apple Maps

LOCATION MANAGEMENT

• Use your current position or save favorite observing sites • Search by city, coordinates, or map • Rename and reorder saved locations • Quickly switch between observing sites • Use each location’s local date and time

OPTIONAL ISS TRACKING

Add your own N2YO API key to see visible International Space Station passes.

• View rise, peak, and set times • See peak elevation and direction • Follow the ISS path across the sky • Identify passes already in progress

WIDGETS & APPLE WATCH

• Home Screen widgets for quick condition checks • Apple Watch app with glanceable observing conditions • Watch complications for fast access • Sync saved locations and preferences with Apple Watch

CUSTOMIZABLE AND PRIVATE

• Metric or imperial units • No account, subscription, or advertising • Weather data from Open-Meteo • Astronomical positions and recommendations calculated locally

Whether you observe with your eyes, binoculars, a traditional telescope, a Smart/EAA telescope, or an astrophotography setup, Astro Conditions helps you decide when to go outside, where to observe, what to look for, and which equipment to use.